Hundreds of years ago, people developed ingenious methods to secure their letters from prying eyes – and they did it with only paper, adhesive and folds. Late at night on 8 February 1587, an ...

In a steady, stately script, an anonymous Dutch writer living around 1700 wrote a letter: “I never thought you’d be such a miserable dog,” it went. “If you’ve got something to say, just say it to my ...

Abstract: Having spent previous chapters focusing in closely on material details, presenting essential letterlocking features and practices, here we introduce some of the enhancements that add ...

TECHNICAL ART HISTORY SERIES - Digital imaging methods for Cultural Heritage The Venice Center for Digital and Public Humanities, together with the Rijksmuseum and CWI Amsterdam and NICAS, the ...

In 1697, a man named Jacques Sennacque wrote a letter to his cousin, a French merchant named Pierre Le Pers, requesting a certified death certificate for another man named Daniel Le Pers (presumably ...

The rich history of a centuries-old document security technology—folding and securing a letter into its own envelope for delivery—and a comprehensive guide to learning how to make your own locked ...

Centuries before encrypted texts and secure video conferencing, people relied on physical engineering to keep their written messages sturdy, sealed, and secure against eavesdroppers. In a new book, ...

Over recent years we’ve been treated to a series of fascinating advances in the world of x-ray imaging, as researchers have developed their x-ray microtomography techniques and equipment to the point ...